Multistory twisting machine



Aug. 6, 1935. -o. BOCHMANN 2,010,255

MULTISTORY TWISTING MACHINE Filed May 15, 1935 Patented Aug. 6, 1935UNITED STATES PATENT OFFICE MULTISTORY TWISTIN G MACHINE Application May13, 1933, Serial No. 670,949 In Germany June 25, 1932 2 Claims.

This invention relates to a multi-story twisting machine in which therows of spindles of every story are driven by a circulating drivingband.

The known twisting machines of this type are provided with single twisttwisting spindles which stand in vertical position, the belt movingalong the spindles being guided over cylindrical pulleys.

The known double twist twisting spindles are, however, mostly arrangedin one row and driven by a band from driving drums extending along theentire length of the machine, and as these spindles are in inclinedposition, for the purpose of maintaining the unwinding bobbins at rest,the drives employed in the known twisting machines with single twisttwisting spindles cannot be employed. It has been proposed to employbelt drive in connection with double twist twisting machines. The beltguide was, however, in horizontal position so that also the spindlesmust assume an absolutely horizontal position. Such an arrangement is,however, complicated and requires much power, the more so as the wholepressure acts on the spindles upon the bearing points, wherefrom resultsfurther a premature wear. The above mentioned double twist twistingmachines with band drive possess, although the spindle can assume aninclined position, very close to the perpendicular position, theobjection that they require very much space, and nevertheless onlycomparatively few spindles can be accommodated.

This invention has for its object to avoid these inconveniences.

It consists in the employment of inclined positioned double twisttwisting spindles in multistory machines, in which the driving band isconducted over conical belt guiding pulleys arranged between the spindlerows of the individual story. It is advisable to subdivide once orseveral times the conical belt guiding pulleys in order to equalize thedifferent circumferential speeds. It is further advisable to movablyarrange the conical belt guiding pulleys, this characteristic featureforming, however, no part of the invention. The change of direction ofthe belt at the ends of the machine is effected by means of cylindricalpulleys for changing direction having a rim in order to thus prevent thebelt from slipping eff in downward direction. According to the length orthe machine supporting rollers for the belt may also be provided spacedat certain distances apart.

For further explanation it may be mentioned that the belt guiding can beeffected also by 0bliquely arranged belt guide rollers, or straightdiscs with a section belt bevelled in accordance with the spindleposition may be employed.

This invention presents the advantage that the simplest driving meanscan be employed for inclined double twist twisting spindles arranged inseveral stories, whereby an extremely narrow width of the machine andthe accommodation of a greater number of spindles than hitherto areattained. A perfect economical exploitation of the machine is thereforeensured with simplest and cheapest production of the machine. A furtheradvantage consists in that by the special belt guiding a perfectrotation of the spindles is ensured.

An embodiment of the invention is illustrated by way of example in theaccompanying drawing in which the only figure shows the improvedtwisting machine in cross section.

The machine frame i carries on each side outwardly inclined double twisttwisting spindles 4 and 5 arranged in several stories the one above theother on spindle bars 2 and 3, the threads being conducted from thesespindles over thread guides 6 and 1 to the winding spools 8 and 9arranged above the corresponding row of spindles. The spindles in theopposite rows of spindles are driven by an endless belt ill or I lextending along the spindle and to which belt by bevelled belt guidingpulleys I2 or I3 an oblique position is ensured in accordance with theposition of the spindles. In order to prevent premature wear of thebelt, it is advisable to subdivide once or several times the bevelledpulleys l2 and IS in order to thus equalize the differentcircumferential speeds.

I claim:-

1. In a multi-story twisting machine in which the rows of spindles ofeach story are each driven by a circulating driving band, thecombination of inclined double twist twisting spindles arranged in rowsin each story, conical pulleys arranged between the rows of spindles ofeach story, and a belt guided on its inner side over said pulleys andbearing on its outer side against said spindles to eiiect the rotationthereof.

2. A multi-story twisting machine as specified in claim 1, in which theconical belt guiding pulleys are subdivided.

. OTIO BOCHMANN.

